In response to questions from the Journal Sentinel, Burke spokesman Joe Zepecki says he erred when he told the paper last year that Burke began working for Trek Bicycle in 1991. Burke is running against Republican Gov. Scott Walker.

Now it appears that Zepecki's last correction -- blamed on a typo -- needs to be corrected. Burke actually started at her family's Waterloo-based company a year earlier than stated, Zepecki said. He said Burke also lost money on rental property in that same year, offsetting any income from Trek.

"This was an honest mistake, discovered after uncovering the expired passport she used nearly 25 years ago," he said. "We're correcting it."

But Republicans are suggesting they detect a pattern. On Tuesday, they even launched a website -- maryburkeresume.com -- to highlight the issue.

"Burke's 'typos' are adding up -- already six in just five months -- and it's difficult to see them as anything but strategic manipulations of the truth," said Joe Fadness, executive director of the state Republican Party.

Originally, Burke's Facebook page and other sourcessaid she left New York -- where she co-founded the company Manhattan Intelligence -- and joined Trek in 1990 as director of European operations.

But that didn't explain why she paid no state income taxes the first year that she was with the firm. Records show she paid the state $2,807 in 1991 but nothing the next two years.

Asked about this, Zepecki said that work history contained a "typo." She actually left New York and started working for Trek in 1991, a year later than she had previously indicated.

Fair enough.

But now Zepecki is back with more changes.

According to Zepecki, Burke, 54, actually sold Manhattan Intelligence on April 1, 1990, just days after the New York Timesdid a short feature on it. Then she started working for Trek US that same year.

If so, why didn't she pay any Wisconsin income taxes then?

"Her partial year tax liability to the state was offset, though, due to things like losses on a rental property she owned," her spokesman said.

She stayed on with Trek US until midway through 1991 when the company launched Trek Europe. She left Wisconsin and moved to Europe to oversee the opening of offices in seven European countries.

In 1992-'93, Burke filed state tax forms but paid nothing.

"Trek Europe was not established until mid-1991, which then paid her wages going forward," Zepecki said. "So for 1991 she reported and paid for the portion of the year she was paid by a Wisconsin business."

The federal government allows individuals living abroad for more than 330 days in a year to exempt foreign earnings up to a certain amount, thus lowering the amount of taxes owed. The figure was $70,000 for 1993.